关键词: 巨桉, 凋落叶, 菊苣, 化感, 光合作用, 农林复合系统

Abstract: The performance and egg quality under different feeding methods of Jinding ducks are compared. The body weights of enclosure-fed ducks arc significantly larger than those of pasture supplemented feeding. But the age of sexual maturity, egg production, egg weight, egg shape and yolk color are obviously better for the latter group. There is no obvious difference for the percentage of shell in total egg weight and the Haugh unit between the two groups.

Key words: Eucalyptus grandis, leaf litter, Cichorium intybus, allelopathy, photosynthesis, agroforestry system